Base on Bootstrap grid system.
col-lg-12
col-lg-6
col-lg-6
col-lg-4
col-lg-4
col-lg-4
col-lg-3
col-lg-3
col-lg-3
col-lg-3
col-lg-2
col-lg-2
col-lg-2
col-lg-2
col-lg-2
col-lg-2
Mobile, tablet, and desktop
col-xs-6
col-xs-6
col-lg-8
col-sm-6
col-sm-6
col-lg-6
col-md-6
col-md-6
col-lg-4
col-sm-6
col-sm-6